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xxMikexx [17]
3 years ago
12

4 HF(g)+SiO2(s) → SiF4(9)+2 H2O(9) Is the Si oxidized or reduced?

Chemistry
1 answer:
Airida [17]3 years ago
8 0

Answer:

Si is reduced since it loses the oxygen atom

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How many moles of solute are in 250.0 mL of a 3.00 M HCl solution?
cestrela7 [59]
0.250 L*3M=0.250 L*3mol/L= 0.750 mol
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3 years ago
2HgO(s)---->2Hg(I)+O2(g) which type of reaction occurs
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Decomposition,because 1 breaks down into 2
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What is the mass of 0.100 mole of neon? (Watch sf’s)
dimaraw [331]

Answer:

The answer to your question is letter D. 2.02 g

Explanation:

Data

moles of Ne = 0.100

atomic mass of Neon = 20.18 g

Process

1.- Use proportions to find the answer

                   20.18 g of Ne ------------------  1 mol of Ne

                        x                 ------------------  0.1 moles

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2.- Consider the significant figures

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4 0
3 years ago
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How do you know if a chemical reaction is balanced ?
Alenkasestr [34]

Hey there!

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According to the law of conservation of mass, matter cannot be created or destroyed, so we must have the same amount of each element on each side of a chemical equation.

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7 0
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A solution containing equal numbers of hydrogen ions and hydroxide ions is
igor_vitrenko [27]

Answer:

The answer to your question is: Neutral

Explanation:

A neutral solution is a solution whose pH is 7.

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- table salt

- cooking oil.

4 0
3 years ago
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